Xem Studiomeasured geometryLibrary › Everyday mounts › Bicycle seatpost diameters: 25.4, 26.8, 27.2, 28.6, 30.9, 31.6 and…
Seatpost section Ø28.6 × 100 long, axis on X
Seatpost section Ø28.6 × 100 long, axis on X: the outside of the post (the wall is not drawn); DXF = the exact Ø28.6 circle
Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.
STEP STL DXF free, CC BY 4.0 (credit "Xem Studio")
Dimensions
| post Ø (mm) | Ø28.6 |
|---|---|
| where it is used | 1 1/8 in |
| from | Sheldon Brown |
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Bicycle seatpost diameters: 25.4, 26.8, 27.2, 28.6, 30.9, 31.6 and 34.9 mm: every size, notes, mating features and sources. What diameter is a bike seatpost?